西尼罗病毒(WNV)感染是一种经蚊虫传播，以鸟类为主要动物宿主的自然疫源性疾病。
West Nile virus (WNV) infection is an endemic disease caused by WNV that is maintained in a natural transmission cycle involving mosquito vectors and bird reservoir hosts.
大鸨是杂食性鸟类，但以植物性食物为主。
The Great Bustard is polyphagia bird, but it feeds mainly on plants.
野生鸟类以广布种类为主，有19种，占所见种类的46。
The 41 species of wild birds distributing in China are composed of 19 Eurytopic realm species(46.
骨顶鸡是杂食性鸟类，食物以植物为主，但也摄取动物性食物。
F. atra was omnivorous. The food list was mainly made up of vegetations, but also contained some animals.
骨顶鸡是杂食性鸟类，食物以植物为主，但也摄取动物性食物。
F. atra was omnivorous. The food list was mainly made up of vegetations, but also contained some animals.
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